/*
 * Copyright 2010 Alessandro Bellucci
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.soupframework.gwt.designerpanel.interaction.keyboard.client;

import java.util.List;

import org.soupframework.gwt.designerpanel.client.designer.Designer;
import org.soupframework.gwt.designerpanel.client.designer.impl.AbsolutePanelViewDesigner;
import org.soupframework.gwt.designerpanel.client.interaction.InteractionHandlerManager;

import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyDownEvent;

public class AbsolutePanelKeyboardInteractionHandler<T, A extends AbsolutePanelViewDesigner<T>> extends ContainerKeyboardInteractionHandler<T, A> {

	public static final int MOVE_AMOUNT = 5;

	public AbsolutePanelKeyboardInteractionHandler(InteractionHandlerManager<T> manager, A designer) {
		super(manager, designer);
	}

	protected void onKeyDownInt(KeyDownEvent event, Designer<T> childDesigner) {
		int keyCode = event.getNativeKeyCode();
		if(keyCode == KeyCodes.KEY_RIGHT){
			List<T> selectedObjects = this.getDesigner().getSelectedObjects(false);
			this.getDesigner().moveObjectsPartial("MoveRight", selectedObjects, MOVE_AMOUNT, 0, false);
		}
		else if(keyCode == KeyCodes.KEY_LEFT){
			List<T> selectedObjects = this.getDesigner().getSelectedObjects(false);
			this.getDesigner().moveObjectsPartial("MoveLeft", selectedObjects, -MOVE_AMOUNT, 0, false);
		}
		else if(keyCode == KeyCodes.KEY_DOWN){
			List<T> selectedObjects = this.getDesigner().getSelectedObjects(false);
			this.getDesigner().moveObjectsPartial("MoveDown", selectedObjects, 0, MOVE_AMOUNT, false);
		}
		else if(keyCode == KeyCodes.KEY_UP){
			List<T> selectedObjects = this.getDesigner().getSelectedObjects(false);
			this.getDesigner().moveObjectsPartial("MoveUp", selectedObjects, 0, -MOVE_AMOUNT, false);
		}
		super.onKeyDownInt(event, childDesigner);
	}
}
